Features High Quality This drilling mandrel provides good metallic texture, comfortable surface and easy to hold, so the output torque increases. SPECIAL DESIGN - The unique thrust bearing facilitates the application of torque by the handle in greater clamping force. The clamping force of this self-tightening chuck would increase according to the required force. Easy to Use This product adopts a keyless design, which offers faster and easier chuck. Widely Applied - Can be used with various drilling machines, milling machines, lathes, drilling lathes and hand power tools. HIGH QUALITY - This drilling mandrel provides good metal texture, comfortable surface and easy to hold, so the output torque increases. Special design: the unique thrust bearing facilitates the application of torque by the handle in greater clamping force. The clamping force of this automatic tightening mandrel would increase according to the required force. EASY TO USE - This product adopts keyless design, which offers faster and easier chuck. Widely Applied: Can be used with various drilling machines, milling machines, lathes, drilling lathes and hand power tools. Budget: Material: 45# steel Holding capacity: 0-13mm (1/2") Drill chuck inner diameter: 15.733 mm (0.61") Ejection Diameter: 40 mm (1.57 ") Mandrel Length: 88 mm (3.46 ") Shaft Type: MT2-B16 Package includes: 1 x Chuck & Arbor Package List